Portage Biochemistry Module 8 Quiz Already Passed

Portage Biochemistry Module 8 Quiz Already Passed What is the "unifying" theory covered in this module? Chemiosmotic theory How many ATP are produced per NADH molecule? Per FADH2 molecule? 2.5 ATP produced per NADH; 1.5 ATP produced per FADH2 In the figure below, several portions of a molecule have dashed circles. Which portion of the molecule, A, B, C, or D, would be removed in oxidative deamination? Briefly explain. Part D. The amine portion of the amino acid is removed in oxidative deamination. What happens to the carbon skeleton of an amino acid after it is separated from NH4+? The carbon skeleton becomes acetyl-CoA, then ATP. Why is urea such a good molecule for excreting nitrogen from cells? It has a high density of nitrogen in a small molecule, and it can form numerous hydrogen bonds with water. Given the urea cycle below: A. In the overall processing of NH4+, how many molecules of ATP are invested? B. What molecule from the urea cycle can enter the citric acid cycle? C. What is Pi? D. Which two amino acids were studied in Module 3? A. 3 ATP molecules total. (2 ATP from Reaction-A and 1 in Reaction-2) B. Fumarate C. Inorganic phosphate or inorganic orthophosphate D. Aspartate and arginine What is an integral protein? A protein firmly embedded in the lipid bilayer How many complexes are in the ETC? Four complexes named complex I, II, III, and IV At which ETC complex is H2O produced? How is it produced? At complex IV by the following reaction: O2 + 4e- + 4H+ → 2H2O What complex oxidizes NADH? How about FADH2? Complex I for NADH. Complex II for FADH2. At which complex is water produced from oxygen? Complex IV How is the H+ gradient formed? Complexes I, III, and IV pump these ions from the matrix to the intermembrane space. What is the purpose of FO and F1 in ATP synthase? FO contains the pore through which H+ ions flow causing its rotation. The rotation of FO causes F1 to catalyze the formation of ATP from ADP and Pi.